Electromagnetic means for operating air and other whistles.



H. H. FREEMAN.

- uruonxon nun AUG. 1908.

Patented Oct. 19, 1909.

ELECTROMAGNETIC MEANS FOR OPERATING AIR AND OTHER WHISTLES.

UNITED STATES PATENT 1 FF-1011.1,

HERBERT n. FREEMAN, or sr. PAUL, amas;-

"nnnc'rnomaennricnnims non ornnair'ine imam; ornnn Specification of Iette'r's latent.

meme o t-19,

' fTonall whom a ma imam.-

Be itlmown that I;

HERBERT H. FREEMAN,

, i -citizen of the United States,-residing at St.-

useful Improvements in Electroma Means for Operating Air and other- Pauh'in the county of Ramsey and State of Minnesota, have invented-certain new and etic istles; and I do declare'the following to be a full, 'clear,.and exact description of the inf vention, such as will enable others skilled in the art to which it appertains to make and i use the same.

This invention relates to' electro-m agnetic means for operating air. and other whistles from a distant point.

One of the objects ofthe invention is the production of electr'osma eti'c means adapt- 7 ed to move a valve from its seat so as to open crating a whistle.

a normally closed steam or air port through which steam or air is allowed to flow for op- I Another object of the invention is the pro fluct-ion of electro-magnetic means adapted to be connected to valves of different types and arranged to operate said valves through a circuit controlled by a' distant switch.

With the foregoing and other. objects in view, the invention consists ofcerta'in novel features of construction, combination and arrangement of parts, as will be more fully de-.

- scribed and particularly pointed out in 'thdi appended claims. I

In the accompanying drawings, Figure 1- is; a side elevation of my improved-valve operating mechanism, partly in section; Fig. 2

is a horizontal section taken on line '22 of F-ig. 1; Fig. 3 is a horizontal section taken I on lines 3-3 of Fig. 1; Fig. 4 is a side elevation partly in section showing the applicationofiny invention to a diaphragm valve provided with two compartments. Similar parts are referred toin the following description and indicated in all the views of the drawings by similar reference characters. 1

a In the drawings 1. have illustrated the preferred embodiment of my invention and these drawings are arranged for illustrative purposes andacc'ordingly not drawn to scale; In the drawings, the numeral 1 designates an electro magnet provided with the usual circuit wires, 2" and. 3.. The magnet 1 is formed or provided with a pair of'upstandg rms 4 and 5 which are, spaced apart *on the u 'per .end of said magnet and-formed with inwardly inclined edges 6 and 7 which 'npplicatio'n med au ust '24. ms. Malia-189$;

bare adapted contact an armature 8. I

E which ports 17 and 18 extend- Each of t 1e ports 17 and "18 are wider at their inner 'ends in horizontal cross section thanat their outer ends and "taper outwardly from their inner to their outer ends. The ports 17j-and 18 communicate with asupply pipe 19 and a whistle pipe 20, respectively. Normally the piston .13 isheld agail'is tfthe upper end-of the cylinder 12 and the piston 14 held over the port 18 by ineans ofa spring 21 which is mounted on the lower end of the piston rod 11, and adapted to bearagainst the lower end of the piston: lat and against lugs 22 formed onplate 23 and-which engage the piston rod on opposite sides- The cylinder 12 is provided with an air vent 24 for permitting the pistons 13 and let to freely move a in said cylinder.

The "circuit wires 2 and 3 connected to electro ma-gnet' 1 are arranged to be-con trolled by means of an operating switch-comprising a contact block 25 having a suitable screw connecting post 26 -a-nd'a lever arm 27 provided with similar connecting post 28. The lever 27 is pivotally supported upon a. bracket arm 29 and normally'held out of engagement with contactjbloc'k 25 by neans of a spring 30 which is adapted to bearwith its outer en'dagainst one end of'sa-id lever and is connected at its inner end to the pivot of said lever. The'lever 27 is connected to an operating cord 31 which may extend in any direction and is adapted-to be operated manually. When the operating cord 31 is pulled, current will fiow over wires '2 and 3 energizing magnet 1 and the armature 8. which, of course,"being formed-of steel or iron willbeattracted by the upstanding legs of said magnet and piston 14 will open com-- inuni'cation between ports 17 and-1'8, thereby 'allowin steam to ass from'thesupply pi e 19 to'thi whistle p ipe'20. Should it be (it; sired the; electric current may. he obtained from the train" aerator systemif the is'pro'vided' wit such asystem. When 11115 desiredto cease the operation of the whistle, said valve is arranged to control steam p'res- 65' sureor air pressure with detail modifications 'inthe legs connected tothe operating mag-- net and in the piston or movable valve ports.

the cord 31 is released which operation will bring the 'lever' 27 out of'engagement with contact block 25' and by'means of the'spring' 21 and a piston 14 close communicationbetweenports 17 and 18, thereby stopping the Wl1iStle. H.

The application illustrated in Fig. 4 comprises the combination 0t an electro-magnetic means, comprisin the essential part of my' invention, with a iaphragm valve. 'Inthis figure, the numeral 32 designates a-valve casing formed in two: compartments and provided with a diaphragm 33 which is secured between said sections. The upper section of the casing 32 is .formed with an '.-opening 34 through which a gasket 35 exi 1 tends and is secured against the casing 32 by means of a nut 36. Theupper section of the casing communicates with a steam or air a pipe 37 and 'the'lowerend of the casing 3,2

communicates with a similar pipe'38. The diaphragm 33- divides the casin'g32 intotwo compartments 39and 40 and a plug or arma time 41 formed with lateral extensions '42 and;43 is secured to the upper side of the diaphragm 33 anda valve 44'is' secured to the lower side of said diaphragm. The valve .44 is-normally seated onavalve seat 45 formed in an eduction pipe 46 which extends '-downwardly through the lower section-of the casing 32 and leads to the whistle by its own gravity and the weight of the plug 41. "Nor-- mallythe pressure in chambers 39 and is substantially equal and when seated on" its seat, valve 44 is adapted to-closecommunication between pipe-38 and pipe 46. The

[gasket 35 is formed with openings 47 and48 through" which legs 49 and 50 having connec- 40 tions with an electro-magnet 51 extend .Electro-magnet 51 is connected by means of current carrying wires with the circuit closing lever switch 27 and when energized by i -the ,cIosing of-the circuit will raise plug or armature 41' and valve 44 and thereby open communication between pipes 38, and 46,

consequently, operating the whistle con- 7 "nected with pipe 46. The plug or armature. I 41 is formed with an outwardly ta ering .5

end which is adapted tocontact with t e terminalsof legs 49 and 50. When the circuit is opened by releasing the operating cord,

' communication'ldetweenpipes 38 and 46 will and Valve 44 which 7 causes s'tantly return to its seat4 be closed by the-pressure of :the steam. in chamber 30, weight of plugor arrnature 4 1' saidlvalve to in- My improved device can be applied to and it'is especially designed for. locomotives and a railroad whistles but is also vapplicable .;to stationary whistles such as are-commonly used 'in factories and similar institutions.

- a It is evident that my invention may be used in connection'with any valve whether ",From theforegoingdescription taken in connection with the accompanyin drawings,

the construction and operation 0 the invenof the invention, as defined, in the'appended 7 claims. I

I claim as my invention I r 1. The combination with a valve casing divided into two compartments or chambers 'by' a diaphragm, of means for supplying fluid underpressure to the chambers, a valve seat ext nding into one of the chambers, a.

valvesecured to the diaphragm of the'c asing and'adapted'to engagewith-the valve seat, an armature secured to-the diaphragm, an arm .projectin-gfinto the remaining chamber adapted to engage with thearmature whereby the valve may .be removed from its seat, a;magnet adapted to magnetize the arm, means for energizmg the magnet, and" means for controlling the ener 'zmg means. '2. In comb natlon with a va' ve cas ng d1? plying "fluid under'pressure to:-'-the compart ments, the valve I'Sfiflllextending into, one of the compartments-a valve -.secure'dft'o the diaphragm of the casing and .adaptedto engage the Valve seat, an armaturei atjthe upper end-of the valveand el'ectro-magnetic means extending into the casin for attract} I the .va ve from'the:

ing the armature tolift seat. v

. 3. The combination a valvecasing, a

diaphragmsecu'red inwardly-to the 'caslng and div1dingthesameinto two compart- "ments, means for supplying fluidunder pressure to the compartments, valveseat ex tending into one .of the compartments, a

valve movable with .f the diaphragm and adapted to be normally held on thevalve seat by the'weight ofthe' valve and the prestending into the "casing for attracting Qthe armature toxraise the valve from its seat:v

my hand 'inz presence if nesses I hWitnesSesr 'Anna Pnnnnsonp f 5 LA VERNE M. FUN1K.

- .120 I Inztestimony whereof I:hav e' hereunto set? two'subscribing wit- H vided into two compartments, a dia bra-gm extending across the casing, means or sup-- I sure'flof'the steam or Ifiuidin the-opposite cor'npa'rtme'ant, an armature at the upper end of the' valve and electro-m'agneticmeans ex 4 

